Dear Authors:

Now your manuscript received three referee comments and one short comment. The referees positively evaluated your timely work especially in terms of scientific significance (excellent or good). On the other hand, evaluations for scientific quality were moderate (fair or good), mainly because of the necessity of clarification (e.g., definition of terms such as fire intensity and fire radiative power). I studied all comments and replies and found that you are revising the manuscript in an appropriate manner. For example, you improved clarity of terms and reconsidered the GFED regions and biomes. For title, I agree with the authors’ intention to change into ‘Varying relationships between fire radiative power and fire size at global scale’. Actually, change of title on the basis of referee’s suggestion happens frequently. Discussion would become more insightful and meaningful on the basis of referees’ suggestions. Finally, I conclude that the manuscript would be acceptable for publication after proper revision.

Dear Authors:
Based on the open discussion you had with the referees, this manuscript needs major revision to reinforce discussion and improve clarity and quality.
I am looking forward to receiving the manuscript you would revise as you explained in the open discussion.

Dear Authors:

Thank you for sending your manuscript, which was revised on the basis of referee and short comments. After receiving your replies, I did not have additional comments from the referees. I confirmed that the manuscript was improved considerably. For example, consistent use of fire radiative power improved clarity; double classification by the GFED regions and land cover types and discussion on data reliability enhanced scientific and presentation qualities. As exaggerating fire regimes under changing climate attract attentions, such a global analysis of fire properties should be more and more important. The FRY database and subsequent analyses would help improve global fire models, which currently contain great uncertainties. Finally, my recommendation is that this manuscript would be acceptable for publication.